Updated to 1.5.1
Changed namespace to me.xhawk87 following Java conventions
Fixed NPE in removeMenuItem
Updated pom version to 0.1.1
Fixed bug with closing menu not removing player as viewer from inventory
Fixed bug with clicking player inventory inside menu opening it in top inventory
Added convenience method for handling switching between different menus
Added warning about switching menus in the javadocs for PopupMenu.openMenu
Added method for switching menus within PopupMenu
Updated version to 0.2